Corrugated box production of common problems Raiders - assembly line process (4)

Cause Analysis:

1) The size of the daughter wheel is wrong; 2) The axis of the rolling reel shaft moves in the axial direction; 3) The fixing screw of the mother wheel is loose.

ways to improve:

1) Adjust according to the "Production Order Notice"; 2) Periodically check and maintain the normal working state of the equipment; 3) Tighten the fixing screws.

Question 18: Inconsistent color on the two-sheet forming box

Cause Analysis:

1) Problems with paper suppliers; 2) Wrong use of face paper; 3) Long paper storage time, discolored by light.

ways to improve:
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1) Strictly entering the factory inspection procedures, stepping up inspections during production, 2) correct selection of facial tissues, 3) avoiding paper storage for too long, and storing the paper in closed light.

Question 19: Penetration

Cause Analysis:

1) Excessive amount of glue applied; 2) Mismatched paper stock, face paper, and over-paper; 3) Excessive pressure on machinery and equipment.

ways to improve:

1) Check the glue gap and control the amount of glue applied; 2) Correctly match and use the paper; 3) Correctly adjust the gap between the double-sided machine and single-side machine.

Question 20: High and Low

Cause Analysis:

1) The corrugating roller surface is worn out; 2) The corrugating roller is not operating normally; 3) The surface of the corrugating roller is dirty; 4) The corrugated paper has uneven water-containing unbalanced tension; 5) The corrugated paper is unevenly thick.

ways to improve:

1) According to the specific circumstances of grinding or replacement; 2) Check the bearing and transmission parts at both ends; 3) Clean the corrugated roller surface at any time; 4) Reasonably adjust the speed and increase the warm-up time; 5) Strictly control the corrugated paper weight.

Question 21: The box board is uneven

Cause Analysis:

1) The base paper contains uneven moisture; 2) The environmental humidity is too high; 3) The coating roller and the paper guide roller are not parallel; 4) The force of the paper inside and outside the surface is inconsistent; 5) The speed adjustment is improper.

ways to improve:

1) Increase spray or preheater wrap angle; 2) Increase preheater wrap angle, reduce vehicle speed, improve adhesive quality; 3) Adjust the parallelism of the paper guide roller and the glue roll; 4) Run on paper Adjust the braking condition; 5) Adjust the operating speed of the machine according to the moisture content of the paper and the ambient humidity.

Author/Yang Jingkuan Source: China Packaging News